Am Montag, 2. März 2009 05:24 schrieb Joseph Fredette:
I'm attempting to install hint, I started by doing:
cabal install hint
and it gives me the following error:
cabal: dependencies conflict: ghc-6.10.1 requires process ==1.0.1.1 however process-1.0.1.1 was excluded because ghc-6.10.1 requires process ==1.0.1.0
That seems to be *the* most frequent problem this year. Duncan Coutts explained the matter in http://haskell.org/pipermail/haskell-cafe/2009-January/054523.html Hopefully one of the process packages is in the user db, if both are in the global db, it might be necessary to reinstall ghc.
So I decided to try installing it via darcs, expecting to either have it work, or boil it down to one or two dependencies that were causing the problem, my hunch was right, it boils down to the ghc-mtl package, leading to the same error as above. My question is, how can I fix this? Doing a ghc-pkg hide on either process package breaks Cabal and Haddock (among others) according to the error message, and even after that happens, cabal complains about needing ghc >= 6.6 (or 6.8, depending on which package I disable), even though I have ghc 6.10.
Detailed system info follows, help me haskell-cafe-kenobi(s), you're (all) my only hope(s)!
Sysinfo:
Arch Linux: uname -a gives: Linux Erdos 2.6.28-ARCH #1 SMP PREEMPT Mon Feb 2 22:22:59 UTC 2009 i686 Intel(R) Celeron(R) CPU 3.06GHz GenuineIntel GNU/Linux
ghc --version gives: The Glorious Glasgow Haskell Compilation System, version 6.10.1
cabal --version: cabal-install version 0.6.0 using version 1.6.0.1 of the Cabal library
Thanks again,
/Joe